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 pfsd(1M)                                                           pfsd(1M)

 NAME    [Toc]    [Back]
      pfsd, pfsd.rpc - PFS daemon

 SYNOPSIS    [Toc]    [Back]
      pfsd [nservers] [ -v ] [ -o options ]

 DESCRIPTION    [Toc]    [Back]
      pfsd starts the daemons that handle client filesystem requests.
      nservers is the number of file system server daemons to start.  This
      number should be based on the load expected on this server.  The load
      is defined by the number of mounted file systems.

      Mounts are distributed in a round-robin fashion to the pfsd daemons.

      It is recommended that the pfsd daemon be invoked by rc(1M).  It must
      be invoked in the background.

      The PFSdaemon is composed of two programs: pfsd and pfsd.rpc.  The
      pfsd.rpc program should not be run directly.  It is invoked by the
      pfsd program.

    Options    [Toc]    [Back]
      -v            Verbose.  Show version number, etc.

      -o options    Specify filesystem options using a comma-separated list
                    from the following:

                    acsize=n        The number of entries to keep in the
                                    attribute cache (1390 bytes per entry).

                    bcsize=n        The number of entries to keep in the
                                    block cache (8244 bytes per entry).

                    lcsize=n        The number of entries to keep in the
                                    lookup cache (56 bytes per entry).

                    The defaults are: acsize=200,bcsize=25,lcsize=100

    Attributes Cache    [Toc]    [Back]
      The server's attribute cache retains file attribute information on
      requests that have been made.  This provides faster access to entries
      which have previously been decoded.

    Lookup Cache    [Toc]    [Back]
      The lookup cache holds information about the sequential nature of the
      directory entries.  This cache stores the location of the next
      directory entry.  When a request comes in for a directory entry, if
      the preceding directory entry had been accessed earlier, this location
      is examined first to see if the directory entry being requested
      matches the directory entry at that location.

 Hewlett-Packard Company            - 1 -      HP-UX 11i Version 2: Sep 2004

 pfsd(1M)                                                           pfsd(1M)

    Block Cache    [Toc]    [Back]
      This cache holds raw 8k blocks of recently accessed data.

 EXAMPLES    [Toc]    [Back]
      To start a pfs daemon with a 400 entry attribute cache:

           pfsd -o acsize=400 &

      To start 4 pfs daemons with the default cache sizes:

           pfsd 4 &

 WARNINGS    [Toc]    [Back]
      It is not a good idea to have the cache sizes of the pfsd exceed the
      amount of physical memory (or actually a small portion thereof).  If
      the pfsd spends excessive amounts of time swapping to and from disk,
      the benefits of the caching are diminished.

      Specifying cache which consume more virtual memory than available will
      cause the daemon to die with a virtual memory error.

    Obsolescence Warning    [Toc]    [Back]
      PFS is obsolete and no longer supported on any HP-UX release.
      Delivery of PFS interfaces will be discontinued in the next HP-UX

      PFS, from Young Minds, Inc. (now defunct), was originally adopted by
      HP to provide accessibility to Rock Ridge Interchange file system
      format on CD-ROM file systems.  The equivalent functionality is now
      provided via the HP-UX CDFS file system type and HP-UX's standard file
      systems commands.

      PFS has known functionality and performance problems.  HP customers
      are urged to stop using the PFS interfaces, including these
      interfaces, pfsd and pfsd.rpc.  Customers should move to accessing all
      CD-ROM file system formats by using the standard HP-UX commands,
      specifying the file system type as cdfs.  For example, to mount a CDROM
 file system, use:

           mount -F cdfs /dev/dsk/c0t0d4 /cdrom

      There is no need to treat the cdfs file system type differently from
      any other file system type, therefore no special daemons or commands
      are required to access the variety of CD-ROM file system formats.

      See mount(1M) and mount_cdfs(1M).

 AUTHOR    [Toc]    [Back]
      pfsd was developed by Young Minds, Inc.

 Hewlett-Packard Company            - 2 -      HP-UX 11i Version 2: Sep 2004

 pfsd(1M)                                                           pfsd(1M)

 SEE ALSO    [Toc]    [Back]

 Hewlett-Packard Company            - 3 -      HP-UX 11i Version 2: Sep 2004
[ Back ]
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